Direct Amino-Crotylsilylation of Achiral Acetals and Aldehydes: Asymmetric Synthesis of Homoallylic Amines and Functionalized Pyrrolidines
作者:James S. Panek、Nareshkumar F. Jain
DOI:10.1021/jo00089a004
日期:1994.5
The condensation between chiral (E)-crotyl-silanes 1 and in situ-generated achiral N-acylimines produces homoallylic N-acylamines 3 or tetrasubstituted N-acylpyrrolidines 4 with high levels of diastereoselection.
Asymmetric Synthesis of Homoallylic Amines and Functionalized Pyrrolidines via Direct Amino-Crotylation of In Situ Generated Imines
作者:Jennifer V Schaus、Nareshkumar Jain、James S Panek
DOI:10.1016/s0040-4020(00)00870-x
日期:2000.12
The asymmetric synthesis of functionalized homoallylic amines and silyl functionalizedpyrrolidines through the Lewis acid promoted condensation of chiral (E)-crotylsilanes with sulfonyl imines and in situ generated N-acyl imines is described. We had anticipated that this bond construction could be used in the asymmetric synthesis of the N-terminal amino acid subunit of the nikkomycins. Aryl sulfonyl